To see a gun in your dream represents aggression, anger, and potential danger. You could be on the defensive about something. Or you may be dealing with issues of passiveness/aggressiveness and authority/dependence. Alternatively, a gun is a symbol of power and pride. Perhaps you are looking for shelter or protection in your dream. From a Freudian perspective, a gun represents the penis and male sexual drive. Thus, the gun may mean power or impotence, depending on whether the gun went off or misfired.
To dream that you are loading a gun forewarns that you should be careful in not letting your temper get out of control. It may also signify your ability to defend yourself in a situation. If you dream that a gun fails to fire indicates that you are feeling powerless in some waking situation. Perhaps you need to attack your problems from a different approach. Alternatively, a malfunctioning gun represents sexual impotence or fear of impotence.
To dream that someone is shooting you with a gun suggests that you are experiencing some confrontation in your waking life. You feel victimized in a situation or that you are being targeted. To dream that you shoot a person with a gun denotes your aggressive feeling and hidden anger toward that particular person.
To dream that you are hiding a gun implies that you are repressing your angry feelings.